Littelfuse

Littelfuse, Inc. is an American electronics manufacturing company headquartered in Chicago, Illinois.[2][3] The company primarily produces circuit protection products (fuses) but also manufactures a variety of switches, automotive sensors and, through its subsidiary Zilog, microprocessors.[3][4] Littelfuse was founded in 1927. In addition to its Chicago, Illinois, world headquarters, Littelfuse has more than 40 sales, distribution, manufacturing and engineering facilities in the Americas, Europe and Asia. Littelfuse is the developer of AutoFuse, the first blade-type automotive fuse.[5]

History

Early history

Acquisitions

Littelfuse has acquired multiple companies since 1999, including:

1999 – Harris Suppression Products.[22]

2002 – Semitron.[23]

2003 – Teccor, a manufacturer of circuit and overvoltage protection products.[12][24][25]

2004 – Heinrich Industrie, a German manufacturer of circuit protection products, including the WICKMANN Group, Efen and Pudenz brands.[8][26][27]

2006 – Taiwan-based silicon manufacturer Concord Semiconductor, Inc. and Catalina Performance Accessories, which manufactures and distributes blade-type automotive fuses.[28][29]

2008 – Shock Block Corporation that develop and manufacture ground fault protection technology.[30]

2008 – Startco Engineering, maker of ground-fault protection products and custom-power distribution centers that are used in industrial manufacturing and mining applications.[31]

2010 – Cole Hersee, a maker of power management products, heavy duty electromechanical and switches for commercial vehicles.[32]

2011 – Selco A/S, a Danish company, which produces electrical equipment for use in maritime and industrial environments.[33]

2012 – Accel AB, a Swedish company that manufactures advanced automotive switches and sensors, and Terra Power Systems, which manufactures electrical components for heavy-duty vehicles and trucks.[34][35]

2013 – Hamlin Inc., an automotive sensors manufacturer.[2][3]

2014 – SymCom, a power, voltage, and current monitor developer and manufacturer.[36]

2015 – JRS MFG. LTD., a custom engineered products developer and manufacturer, such as metal-clad, metal-enclosed, and arc-resistant switchgear, E-Houses, mine power centers and mining substations.[37]

2016 – TE Connectivity's circuit protection business.[38]

2016 – IGBT and TVS divisions of ON Semiconductor, a semiconductors supplier company.[39]

2017 – U.S. Sensor, Manufacturer of Temperature Sensors.[40]

2017 – IXYS Corp., a power semiconductor manufacturer, thereby also acquiring Zilog[41]

2018 – Monolith Semiconductor Inc., a silicon carbide switch developer and manufacturer.[42]

2021 – Carling Technologies Inc., a switch and electromechanical circuit breaker manufacturer.[43]

2022 – C&K Switches, an electromechanical switch manufacturer [44]

2023 – Western Automation Research and Development Limited, a designer and manufacturer of electrical shock protection devices.[45]

2025 - Basler Electric, a designer and manufacturer of protection relays.[46]

type	Public
traded as	nasdaq: LFUS S&P 400 component
founded	1927
founder	Edward V. Sundt
location	Chicago, Illinois, United States
key people	Gordon Hunter (chairman) Greg Henderson (CEO)
industry	Electronics, manufacturing
revenue	US$2.19 billion (2024)
operating income	US$159 million (2024)
net income	US$100 million (2024)
assets	US$3.89 billion (2024)
equity	US$2.41 billion (2024)
num employees	16,000 (2024)
subsid	Zilog
website	https://www.littelfuse.com
footnotes	‡R1R‡

History

Early history

1970–1991

Modern history

Products

Acquisitions

References